Blowing-engine



(N; Model.) 2 SheetsSheet 1.

E. REYNOLDS.

BLOWING ENGINE.

No. 591,008. Patented Oct. 5,1897.

(No Model.) 2 SheetsSheet 2.

E. REYNOLDS.

BLOWING ENGINE. I No. 591,008. Patented Qot. 5,1897.

Q k E Q Q Q 'R Q k g h I z R MI I I' I I H H I k H 51 A Nrrnn TATES PATENT rrrcn.

EDWVIN REYNOLDS, OF MILlVAUKEE, ISCONSIN.

BLOWING-ENGINE.

SPECIFICATION forming part of Letters Patent No. 591,008, dated October 5, 1897.

Application filed February 1, 1897. Serial No. 621,438. (No model.)

a To all whom it may concern:

following is a full, clear,

Beit known that I, EDWIN REYNOLDS, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Blowing- Engines; and I do hereby declare that the and exact description thereof. 1

My invention comprehends a new form of blowing-engine valve, and it also comprehends a simple, economical, and efficient valve-actuating mechanism especially adapted for use in connection with a blowing-engine of the vertical-cylinder type.

Therefore said invention consists in certain peculiarities of construction and combination of parts hereinafter set forth, with reference to the accompanying drawings, and subsequently claimed.

Figure l of the drawings represents an elevation of a vertical blowing-engine cylinder provided with valve mechanism in accordance with my invention; and Fig. 2, a verti cal transverse sectional view illustrating the upper cylinder-head, the valves in connection therewith, and certain parts of the valve-op crating mechanism.

Referring by letter to the drawings,A rep resents a vertical blowing-engine air-cylinder having hollow heads, each of these heads being divided into two separate compartments, one of the latter being open to free atmos phere and the other to a blast-conveyor. As herein shown, a transverse partition I) in each cylinder-head may serve to divide the same into two separate compartments, but the latter may be had in various ways. A stud 0, made fast to the exterior ofthe cylinder, midway between the heads thereof, constitutes a bearing for the hub of a rocker-arm B, and fast to the hub back of said arm is a double cam 0, having the function hereinafter set forth. The rocker-arm is wristed to a pitman D, that receives motion froma'driving-eccentrio, (not shown,) and the cam O has oscillation with said arm under a pair of weights E, each of the latter being loose on a stud (I, made fast on cylinder A, to extend therefrom on a plane parallel to that of stud 0, above specified. Hence it will be understood that said weights are alternately lifted by the motion of the cam.

Loose on a stud e, projecting from the outer side of each weight E,- are the inner ends of a pair of rods F G, that extend in opposite directions from said weight. each rod F is coupled to a crank 11 of a rockshaft J, and the outer end of each rod G is likewise connected to a crank I of a rock-shaft K, these rock-shafts being in bearing connection with the cylinder heads. Each rockshaftJ has a crank M connected toa pinf intermediate of bearing-blocks having lateral play in a crosshead 0, movable between guides extending vertically from a coverplate Q fora cylinder-head aperture, and each rock-shaft K has a crank N connected to a pin 9 intermediate of bearing-blocks having lateral play between guides extending vertically from a cover-plate R for another cylinder-head aperture, said bearing-blocks being held in place by means of plates made fast to said cross-heads.

In adjustable connection with the crossheads 0 are shown the stems S of valves U, and in like connection with cross-heads P are shown the stems T of plungers V, these valves and plungers having reciprocation coincident with the movement of weights E, above specified. The valves U govern intake-ports that lead from the heads into the body of the cylinder, and said valves openinward from their seats WV, one of the latter being shown in Fig. 2 as a bushing set in a cylinder-head port. By preference each valve U embodies an annular bevel-edge disk having a flat inner face that comes flush with the inner surface of the corresponding cylinder-head when said valve is seated, and thus clearance due to these valves is entirely obviated, it being understood that the valve-seat is beveled to match the edge of said'disk. As clearly illustrated in Fig. 2, a continuous wall is formed with each disk that closes an inlet-port of the cylinder, this wall hein ggrad ually diminished in diameter from said disk and terminated in a cylindrical sleeve or hub surrounding the stem S, made fast to the disk, central of the same, by any suitable means, this sleeve or hub being concentric with a seat W and reciprocative in a hollow boss h, that extends The outer end of inward from the adjacent cover-plate Q of a cylinder-head aperture.

The light hollow valve just specified affords great strength and offers but little resistance to inflowing air-currents when the port governed by said valve is open and the piston in the cylinder on stroke away from the same.

While preference is given to that form of I iutake-valve herein specifically set forth, va-

rious forms of such valves may be utilized in connection with the actuating mechanism to which this application relates.

As herein shown, each stem S may have a reduced inner end in scre w-th read connection with a thickened central boss on the outer side of the disk constituting part of the valve to which said stem pertains. If the stem eX- tends through the disk, it will be upset in a countersink to be flush with the inner face of said disk, as herein shown, but the connection of said stem and valve is a matter of mechanical expediency susceptible of considerable variation.

Each plunger V has its play in a sliding potvalve X for an outlet-port of the cylinder, and the stem T of the plunger reciprocates in a hollow boss 2', extending inward from a coverplate R, pertaining to the adjacent cylinderhead. Pot-valves and plungers similar to those herein shown have been set forth and claimed in my Patent No. 552,926 of January 14:, 1896, and hence they are not specifically included in this application although they 00- operate with the intake-valves to which said application particularly relates.

The gravity of each of the weights E constitutes a secondary force to effect an automatic closing of valves subsequent to an opening of the same that takes place incidental to a lift of cam O, and it is to be understood that said parts E are only weights by preference, their function in one sense being that of levers moved by said cam and any suitable secondary force in opposite directions,whereby reciprocation is imparted to the intakevalves and delivery-valve plungers herein set forth. It will be observed that the valve and plunger, in connection with one of the weights or levers E, are so disposed as to close of their own weight and that of the movable parts relative thereto, but the valve and plunger cooperating with the other of said weights or levers have a tendency to leave their seats by gravity, and to overcome this tendency a weightYis employed to supplement the aforesaid weight or lever and that of the rods F G, connected thereto, said weight Y being herein shown fast on the rock-shaft J, that has its bearings on the upper cylinder-head.

Vhilc the drawings illustrate but one in tak e-valve and one delivery-valve to each cylinder-head, the latter in practice will generally have a pair of each variety of valve, each pair being operated from one of the weights or levers E by means of the connections hereinbefore set forth, and it is to be understood that each intake-valve at one end of the cyl inder coacts with a delivery-valve at the opposite end of said cylinder.

The valve and plunger mechanisms are so timed with respect to the movement of the piston in the cylinder A that all the valves are full closed against their seats when said pistonisatfullstrokeineitherdirection. The piston being at full stroke in either direction, its reverse movement will be followed by the inward movement of each intake-valve pertaining to the head from which said piston recedes, and at the same time there will be outward movement of the plunger pertaining to each pot-valve controlling a delivery-port of the opposite head. The pressure exerted within the cylinder against each free potvalve will cause the latter to follow its plunger and thereby permit previously-accumulated air to escape from said cylinder into the blast conveyor, this pot-valve and corresponding intake-valve at the opposite end of the cylinder being full open by the time the piston is at mid-stroke, after which they havan automatic gradual return to their seats incidental to the descent of a corresponding weight or lever E, constituting part of the mechanism herein set forth.

From the forgoing it will be seen that the action of the, blowing-engine is made very simple and positive, while at the same time none of the parts are liable to break or get out of order, there being no delicate or comp icated mechanism.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A blowing-engine cylinder having portcontrolling valves each of which comprises a flat disk having a gradually-diminished continuous wall on one side terminating at its small end in a hub, a guide for this hub, a stem extending through the hub from the disk, and valve-operating mechanism in connection with the stem.

2. A blowing-engine cylinder having headports provided with beveled seats, valves for these ports in the form of disks having beveled edges corresponding to said seats, a continuous gradually-diminishing wall extending from one side of each disk and terminating in a hub, a guide for the hub, a stem extending through the hub from the disk, and valve-ope 'ating mechanism connected to the stem.

3. A blowing engine cylinder having a mechanism for simultaneous operation of intake and delivery valves, said mechanism comprising a rocker-arm intermediate of the cylinder heads, a cam oscillative with the rocker-arm, a pair of levers arranged to be alternatively moved in one direction by the cam but having a reverse action independent of the same, rock-shafts in bearing connection with the cylinder-heads, a pair of rods in loose connection with each lever but ex- IIC tended therefrom in opposite directions, and a crank connecting each rod with one of the aforesaid rock-shafts.

4. A vertical blowing-engine cylinder having a mechanism for simultaneous operation of intake and delivery valves, said mechanism comprising a rocker-arm intermediate of the cylinder-heads, a cam oscillative with the rocker-arm, a pair of gravity-levers arranged to be alternately lifted by the cam, rockshafts in bearing connection with the cylinder-heads, a pair of rods in loose connection with each lever but extended therefrom in opposite directions, and a crank connecting each rod with one of the aforesaid rock-shafts.

5. A vertical blowing-engine cylinder having a mechanism for simultaneous operation of intake and delivery valves, said mechanism com prising a rocker-arm intermediate of the cylinder-heads, a cam oscillative with the rocker-arm, a pair of levers arranged to be alternately lifted by the cam but having reverse action independent of the same, rock.- shafts in bearing connection with the cylinder-heads, a pair of rods in loose connection with each lever but extended therefrom in opposite directions. a crank connecting each rod with a rock-shaft, and a counterweight arranged with reference to such valve or valves that would otherwise tend to gravitate from seated position. a

6. A vertical blowing-engine cylinder havin g inwardl y openin g intakovalves provided with stems connected to rock-shafts in hearing connection with the cylinder-heads, potform delivery-valves cooperative with plungers having stems connected to other rockshafts in hearing connection with the cylinder-heads, a r0cker-arn1 intermediate of said cylinder-heads, 'a cam 'oscillative with the rocker-arm, levers arranged to be alternatively lifted by the cam but having reverse action independent of the same, a pair of rods in loose connection with each lever but extended therefrom I in opposite directions, cranks connecting one of the rods with a valve-connected rock-shaft and the other rod with a plunger-connected rock-shaft,wherehy simultaneous operation of intake and delivery valves is effected; and a weight fast on the uppervalve-connected rock-shaft, this weight being arranged to counteract the tendency of the upper intake-valve and lower deliveryvalve plunger to gravitate from seated position.

In testimony that I claim the foregoing I have hereunto set my hand, at- Milwaukee, in the countyiof Milwaukee and State of Wisconsin, in the presence of two Witnesses.

EDWARD CHESHIRE, H. P. CLAUSSEN. 

